Practical Byzantine Fault Tolerance (PBFT)

Practical Byzantine Fault Tolerance (PBFT) is a consensus algorithm used by distributed systems to agree on data despite some participants acting maliciously or experiencing failures. Imagine a group of computers working together to agree on a shared decision. PBFT ensures that even if some members try to cheat or fail, the honest ones can still reach an accurate consensus efficiently and reliably. It achieves this by having multiple rounds of communication and verification among nodes, enabling resilient and secure operation in decentralized settings such as blockchain or distributed databases.